Liang-Chi Hsieh created SPARK-15240: ---------------------------------------
Summary: Use buffer variables for update/merge expressions instead duplicate serialization/deserialization Key: SPARK-15240 URL: https://issues.apache.org/jira/browse/SPARK-15240 Project: Spark Issue Type: Improvement Components: SQL Reporter: Liang-Chi Hsieh We do serialization/deserialization on aggregation buffer in TungstenAggregate for each aggregation function. It wastes time on duplicate serde for the same grouping keys. We can optimize it. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org